Loans, Loans Modified in a Troubled Debt Restructuring (Details) $ in Thousands		6 Months Ended
		Jun. 30, 2019 USD ($) loan	Jun. 30, 2018 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		58	23
Recorded Investment	[1]	$ 6,370	$ 4,035
Unpaid Principal Balance	[2]	$ 6,394	$ 4,099
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		1	1
Recorded Investment	[1]	$ 196	$ 47
Unpaid Principal Balance	[2]	$ 196	$ 47
Commercial real estate — investor
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0	1
Recorded Investment	[1]	$ 0	$ 984
Unpaid Principal Balance	[2]	$ 0	$ 1,031
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		38	10
Recorded Investment	[1]	$ 5,665	$ 2,064
Unpaid Principal Balance	[2]	$ 5,682	$ 2,064
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		18	10
Recorded Investment	[1]	$ 499	$ 935
Unpaid Principal Balance	[2]	$ 506	$ 949
Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		1	1
Recorded Investment	[1]	$ 10	$ 5
Unpaid Principal Balance	[2]	$ 10	$ 8

[1] (a) Represents post-modification outstanding recorded investment.

[2] (b) Represents pre-modification outstanding recorded investment.